December weather - Winter 2024 - Rotterdam, Netherlands

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

An old ship dock in Rotterdam, Netherlands, overlooking the Williamsburg Bridge and the famous Openlucht Binnenvaart museum

Weather in December

By December, winter has cemented its place in Rotterdam, echoed in the shortened daylight hours and cooler, rainy days. As the year draws to a close, the city is mantled by cloud coverage, further reducing the limited sunlight hours. Alongside the cool air, December sees the city's second highest amount of snowfall, measuring 7mm (0.28"). The wind speed amplifies the chill factor, reaching its zenith for the year. Despite the winter spell, the festive spirit of December creates a vibrant tableau against the cool backdrop, characterizing Rotterdam's vibrant end-of-year celebrations.

Temperature

Rotterdam marks the onset of December with an average high-temperature of a frosty 7.2°C (45°F), a subtle shift from November's 10°C (50°F). Rotterdam registers a steady nighttime temperature averaging a wintry 4.2°C (39.6°F) throughout December.

Humidity

With an average relative humidity of 85%, December is the most humid month.

Rainfall

In Rotterdam, in December, during 11 rainfall days, 20mm (0.79") of precipitation is typically accumulated. In Rotterdam, during the entire year, the rain falls for 130.3 days and collects up to 205mm (8.07") of precipitation.

Snowfall

January through March, November and December are months with snowfall in Rotterdam. In December, in Rotterdam, it is snowing for 1.9 days. Throughout December, 7mm (0.28") of snow is accumulated. In Rotterdam, during the entire year, snow falls for 7.4 days and aggregates up to 36mm (1.42") of snow.

Daylight

With an average of 7h and 54min of daylight, December has the shortest days of the year in Rotterdam.
On the first day of December in Rotterdam, sunrise is at 08:27 and sunset at 16:34. On the last day of the month, sunrise is at 08:49 and sunset at 16:40 CET.

Sunshine

The month with the least sunshine in Rotterdam is December, with an average of 3.5h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. To protect against the Sun's most potent rays, avoid direct exposure around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December in Rotterdam?

During December, Rotterdam experiences an average high-temperature of 7.2°C (45°F) and a low-temperature of 4.2°C (39.6°F).

What is the most humid month in Rotterdam?

With an average relative humidity of 85%, December is the most humid month.

What is the average humidity in December in Rotterdam?

In Rotterdam, Netherlands, the average relative humidity in December is 85%.

How many days does it rain in December in Rotterdam?

In Rotterdam, in December, it is raining for 11 days, with typically 20mm (0.79") of accumulated precipitation.

How many days does it snow in December in Rotterdam?

In Rotterdam, Netherlands, during December, snow falls for 1.9 days and regularly aggregates up to 7mm (0.28") of snow.

What is the month with the shortest days in Rotterdam?

December has the shortest days of the year, with an average of 7h and 54min of daylight.

What is the average length of the day in December in Rotterdam?

In Rotterdam, the average day length in December is 7h and 52min.

When is the sunrise / sunset in December in Rotterdam?

On the first day of December in Rotterdam, sunrise is at 08:27 and sunset at 16:34. On the last day of the month, sunrise is at 08:49 and sunset at 16:40 CET.

What is the month with the least sunshine in Rotterdam?

December has the least sunshine of the year in Rotterdam, with an average of 3.5h of sunshine.

How many hours of sunshine does Rotterdam have in December?

In Rotterdam, the average sunshine duration in December is 3.5h.

When is the lowest UV index in Rotterdam?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in December in Rotterdam?

In Rotterdam, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

10°C 50°F

7.2°C 45°F

5.6°C 42.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

18.5km/h 11.5mph

21.3km/h 13.2mph

20.3km/h 12.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.5

16.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Rotterdam, Netherlands

Average high temperature in December: 7.2°C

The warmest months (with the highest average high temperature) are July and August (22°C).
The month with the lowest average high temperature is January (5.6°C).

Average low temperature in December: 4.2°C

The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).

Average pressure in December
Rotterdam, Netherlands

Average pressure in December: 1014.7mbar

The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).

Average wind speed in December
Rotterdam, Netherlands

Average wind speed in December: 20.2km/h

The windiest month (with the highest average wind speed) is December (20.2km/h).
The calmest months (with the lowest average wind speed) are July and August (13.6km/h).

Average humidity in December
Rotterdam, Netherlands

Average humidity in December: 85%

The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Rotterdam, Netherlands

Average rainfall in December: 20mm

The wettest month (with the highest rainfall) is June (24mm).
The driest month (with the least rainfall) is April (9mm).

Average rainfall days in December
Rotterdam, Netherlands

Average rainfall days in December: 11 days

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is February (8.5 days).

Average snowfall in December
Rotterdam, Netherlands

Average snowfall in December: 7mm

The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Rotterdam, Netherlands

Average snowfall days in December: 1.9 days

The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Rotterdam, Netherlands

Average daylight in December: 7h and 5min

The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).

Average sunshine in December: 3h and 3min

The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).

Average sunshine days in December
Rotterdam, Netherlands

Average sunshine days in December: 15 days

The month with the most sunshine days is April (17.5 days).
The month with the least sunshine days is July (13 days).

Average UV index in December
Rotterdam, Netherlands

Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Rotterdam, Netherlands

Average cloud cover in December: 66

The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 40).

Average visibility in December
Rotterdam, Netherlands

Average visibility in December: 9km

The months with the highest visibility are April, May, June and August (10km).
The months with the lowest visibility are January, February, March, July, September, October, November and December (9km).

December weather forecast
Rotterdam, Netherlands

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